Latest questions in Java

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java.lang.IndexOutOfBoundsException: Index: 0, Size: 0 exception

I am getting the error java.lang.IndexOutOfBoundsException: Index: ...READ MORE

May 17, 2022 in Java by Kichu
 • 19,050 points • 2,160 views
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java.sql.SQLException: Access denied for user 'root'@'localhost' (using password: YES)

This is the exception on getConnection(): java.sql.SQLException: Access denied ...READ MORE

May 16, 2022 in Java by Kichu
 • 19,050 points • 6,626 views
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resource : Invocation of init method failed

I am getting this error when I ...READ MORE

May 16, 2022 in Java by Kichu
 • 19,050 points • 2,876 views
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Can I override and overload static methods in Java?

My questions are: Why can't static methods be ...READ MORE

May 15, 2022 in Java by Kichu
 • 19,050 points • 253 views
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Error java.lang.OutOfMemoryError: GC overhead limit exceeded

When I execute my JUnit tests I am getting ...READ MORE

May 15, 2022 in Java by Kichu
 • 19,050 points • 389 views
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What is "String args[]"? parameter in main method Java

I am a beginner in java and ...READ MORE

May 15, 2022 in Java by Kichu
 • 19,050 points • 319 views
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java.lang.NumberFormatException: null i

I am getting this error while doing ...READ MORE

May 13, 2022 in Java by Kichu
 • 19,050 points • 1,641 views
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Error occurred during initialization of boot layer FindException: Module not found

I executed this command line: java --module-path bin ...READ MORE

May 13, 2022 in Java by Kichu
 • 19,050 points • 1,565 views
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Unable to create requested service [org.hibernate.engine.jdbc.env.spi.JdbcEnvironment]

I want to configure hibernate ORM mapping ...READ MORE

May 11, 2022 in Java by Kichu
 • 19,050 points • 17,484 views
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org.springframework.beans.factory.BeanCreationException: Error creating bean with name 'MyController':

I am trying to create a spring ...READ MORE

May 9, 2022 in Java by Kichu
 • 19,050 points • 8,420 views
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Int division: Why is the result of 1/3 == 0?

I ran this code and got the result ...READ MORE

May 9, 2022 in Java by Kichu
 • 19,050 points • 257 views
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Can an outer class access the members of inner class?

If the inner class is defined as ...READ MORE

May 9, 2022 in Java by Kichu
 • 19,050 points • 226 views
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java.net.SocketException: Connection reset

I was having an error when I ...READ MORE

May 8, 2022 in Java by Kichu
 • 19,050 points • 748 views
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Spring Maven clean error - The requested profile "pom.xml" could not be activated because it does not exist

I am  getting this message when I ...READ MORE

May 8, 2022 in Java by Kichu
 • 19,050 points • 7,124 views
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Eclipse "Error: Could not find or load main class"

I have a project on my laptop ...READ MORE

May 7, 2022 in Java by narikkadan
 • 63,420 points • 1,686 views
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java.lang.ClassNotFoundException: oracle.jdbc.driver.OracleDriver

I am getting this exception when I ...READ MORE

May 7, 2022 in Java by narikkadan
 • 63,420 points • 2,095 views
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Exception in thread "main" java.lang.Error: Unresolved compilation problems

I am facing issues importing classes and ...READ MORE

May 7, 2022 in Java by narikkadan
 • 63,420 points • 4,897 views
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Is hiding implementation detail Encapsulation or Abstraction?

I have seen some people defining abstraction ...READ MORE

May 6, 2022 in Java by narikkadan
 • 63,420 points • 2,505 views
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How to round up integer division and have int result in Java?

I am working on a code to ...READ MORE

May 5, 2022 in Java by Kichu
 • 19,050 points • 1,927 views
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CreateProcess error=2, The system cannot find the file specified

I have written a java program to ...READ MORE

May 5, 2022 in Java by Kichu
 • 19,050 points • 5,909 views
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Javamail Could not convert socket to TLS GMail

I want to send an email using ...READ MORE

May 2, 2022 in Java by Kichu
 • 19,050 points • 2,621 views
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testingtesttest

This category is home to all kinds ...READ MORE

Apr 26, 2022 in Java by anonymous
 • 300 points • 238 views
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What are the differences between a HashMap and a Hashtable in Java?

What are the differences between a HashMap and a Hashtable in ...READ MORE

Apr 26, 2022 in Java by Rahul
 • 3,380 points • 254 views
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What is the default access specifier in Java?

I just started reading a Java book ...READ MORE

Apr 26, 2022 in Java by Rahul
 • 3,380 points • 251 views
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When to use LinkedList over ArrayList in Java?

I've always been one to simply use: List<String> ...READ MORE

Apr 26, 2022 in Java by Rahul
 • 3,380 points • 268 views
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Why is there no multiple inheritance in Java, but implementing multiple interfaces is allowed?

Java doesn't allow multiple inheritance, but it ...READ MORE

Apr 26, 2022 in Java by Rahul
 • 3,380 points • 240 views
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What is a NullPointerException, and how do I fix it?

What are Null Pointer Exceptions (java.lang.NullPointerException) and ...READ MORE

Apr 26, 2022 in Java by Rahul
 • 3,380 points • 353 views
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How do you use the ? : (conditional) operator in JavaScript?

In simple words, what is the ?: ...READ MORE

Apr 26, 2022 in Java by Rahul
 • 3,380 points • 233 views
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Convert integer to string

Given a number: int number = 1234; Which would ...READ MORE

Apr 26, 2022 in Java by Rahul
 • 3,380 points • 279 views
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window.location.href and window.open () methods in JavaScript

What is the difference between window.location.href and ...READ MORE

Apr 26, 2022 in Java by Rahul
 • 3,380 points • 462 views
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Comparing java.utilDate with LocalDate in java

I have a method wherein have to ...READ MORE

Apr 21, 2022 in Java by Rahul
 • 3,380 points • 374 views
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How to split a string in Java

I have a string, "004-034556", that I want ...READ MORE

Apr 21, 2022 in Java by Rahul
 • 3,380 points • 383 views
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Reversing an Array in Java [duplicate]

If I have an array like this: 1 ...READ MORE

Apr 21, 2022 in Java by Rahul
 • 3,380 points • 270 views
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The superclass "javax.servlet.http.HttpServlet" was not found on the Java Build Path [duplicate]

I have a project created by Maven ...READ MORE

Apr 21, 2022 in Java by Rahul
 • 3,380 points • 1,362 views
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How do I "decompile" Java class files? [closed]

What program can I use to decompile ...READ MORE

Apr 21, 2022 in Java by Rahul
 • 3,380 points • 401 views
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Java 11 JDK for Windows 7 32-bit system

I wanted to install Java 11 on ...READ MORE

Apr 21, 2022 in Java by Rahul
 • 3,380 points • 3,778 views
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How to decode jwt token in javascript without using a library?

How can I decode the payload of ...READ MORE

Apr 21, 2022 in Java by Rahul
 • 3,380 points • 1,306 views
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Java inner class and static nested class

What is the main difference between an ...READ MORE

Apr 21, 2022 in Java by Rahul
 • 3,380 points • 227 views
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For-each over an array in JavaScript

How can I loop through all the ...READ MORE

Apr 19, 2022 in Java by Rahul
 • 3,380 points • 320 views
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Simplest and understandable example of volatile keyword in Java

I'm reading about volatile keyword in Java and completely ...READ MORE

Apr 19, 2022 in Java by Rahul
 • 3,380 points • 198 views
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What is a JavaBean exactly?

I understood, I think, that a "Bean" ...READ MORE

Apr 19, 2022 in Java by Rahul
 • 3,380 points • 217 views
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How does the Java 'for each' loop work?

Consider: List<String> someList = new ArrayList<String>(); // add "monkey", ...READ MORE

Apr 19, 2022 in Java by Rahul
 • 3,380 points • 227 views
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Data access object (DAO) in Java

I was going through a document and ...READ MORE

Apr 19, 2022 in Java by Rahul
 • 3,380 points • 482 views
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How to set XML Attribute inside XML Element in Java Pojo Class - JAVX

How can I get this Output Response? <Response> ...READ MORE

Apr 19, 2022 in Java by Rahul
 • 3,380 points • 2,695 views
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1 answer

How do I declare and initialize an array in Java?

To declare and initialize an array in ...READ MORE

Jun 22, 2023 in Java by Khan Sarfaraz
• 700 points • 257 views
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public static void main(String arg[ ] ) in java is it fixed?

I was recently asked in an exam ...READ MORE

Apr 19, 2022 in Java by Rahul
 • 3,380 points • 589 views
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Change date format in a Java string

I've a String representing a date. String date_s = "2011-01-18 ...READ MORE

Apr 14, 2022 in Java by Rahul
 • 3,380 points • 247 views
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How to make a new List in Java

We create a Set as: Set myset = new HashSet() How ...READ MORE

Apr 14, 2022 in Java by Rahul
 • 3,380 points • 236 views
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What does "javascript:void(0)" mean?

<a href="javascript:void(0)" id="loginlink">login</a> I've seen such hrefs many ...READ MORE

Apr 14, 2022 in Java by Rahul
 • 3,380 points • 215 views
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Reverse a string in Java

I have "Hello World" kept in a ...READ MORE

Apr 14, 2022 in Java by Rahul
 • 3,380 points • 222 views
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